Roofing nail



E.\BOLEY. RooFING NAIL.

APPLICATION FILED N0V.29l 1920.

Patented Nov. 7, 1922;

III im r I v/////// I r\\\\\\\ 'Patented Nov. 7, 1922.

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ERNST BOLEY, OF CLEVELAND, OHIO.

ROOFING NAIL.

Application filed November 29, 1920. Serial No. 427,109.

To all lwlwm t may concern.:

Be it known that I. ERNST Bonny, a citizen of the United States, andresident of Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented certain new and useful Improvements in Roofing Nails, of whichthe following is a specification.

This invention relates to roofing nails` and more particularly toroofing nailshaving large diameter heads for use in holding down feltpaper, composition roofings, and the like. l

The principal object of my invention 1s the provision of such a nailhaving a head of such size that it will firmly grip and hold the paperor other roofing material without the use of auxiliary devices, such asthe metal caps heretofore used.

Another object is to form a nail of this class that will form a watertight seal with the roofing when driven home.

Still another object is to form a nail of this class that will have ashank of comparatively small diameter with relation to the head.

Other objects and advantages will be apparent from the followingspecification and claims, and will be illustrated in the accompanyingdrawings, in which- Figure l is a perspective v1ew of one form ofroofing nail made in accordance with my invention, and having concentricsealing rings on the under side of the head.

Figure 2 is a sectional elevation of the nail of Figure 1.

Figure 3 is a perspective view of a modified form of nail made inaccordance with my invention, and having radially disposed ribs on theunder side of the head.

Figure 4 is a sectional elevation of the nail of Figure 3.

Figure 5 is a perspective view of still another modified form of nailmade in accordance with my invention, and having concentric rows ofpoints on the under side of the head.

Figure 6 is a sectional elevation of the nail of Figure 5.

Figure 7 is a top plan view of the nail ead.

The drawings are shown on a greatly enlarged scale for the sake ofclearness.

Referring particularly to the drawin the numeral 2 designates the headof the nail havinfr an integral shank 3 which is approximate v at leastone-fifth the diameter of the head The head 2 is provided with the usualroughened surface 4 on its outer v surface, and the shank 3 is providedwith the usual roughened surfaces 5.

The under side of the head is provided with a plurality of sharpprojections adapted to sink into, and firmly engage the roof- In theform of nail shown in Figures 1 and 2, the projections are in the formof integral concentric rings 7, three being shown in the drawings,although one or more may be used as desired. The rings 7 aresubstantially triangular in cross-section, thus presenting a sharpsurface to the roofing.

The concentric rings 7 will sink into the roofing when driven home,thereby forming concentric water seals, and also serving to more firmlyhold to the roofing.

The form of nail shown in Figures 3 and 4 is similar to the form shownin Figures l and 2, with the exception that the projections on the underside of the head are in the form of radially disposed ribs 8 which aresubstantially triangular in cross-section, thus presenting a sharpsurface to the roofing.

The ribs 8 are adapted to firmly engage and hold down the roofing, andare in such close proximity to each other that they will serve to pressdown the entire surface of roofing under the head in close contact withthe 1oof, thereby forming a tight joint therewit The form of nail shownin Figures 5 and 6 is similar to that shown in Figures l and 2, with theexception that the projections on the under side of the head are in theform of concentric rows of sharp projecting points 9 which firmly engagethe roofing.

As the nails are driven home the points 9, due to their close proximity,will form continuous concentric rings of depressions in the roofing,thus forming a water-tight joint or seal.

I claim 1. A roofing nail for fastening roofing felt and similarcovering in place, comprising a shank portion, one end of said shankeing pointed and the other end being upset to form an integral headportion, the diameter of said head being approximately ve times thediameter of said shank, said head having its upper face checkered andits bottom face provided with sharpened projections adapted to be driveninto said covering, whereby a water seal will be formed to revent'waterflowing under said head and into the aperture formed by said shank.

2Q A rooting nail for fastening roofing felt and similar covering inplace, comprising a shank portion, one end of said shank being pointedand the other end being upset to form an integral head portion, thediameter of said head being approximately iive times the diameter ofsaidr shank, said head p having its upper face checkered and its bottomface provided with a plurality of in- .tegralz concentric, -projeetinYsealing rings,

sa1d rmgs being s stantial y triangular in cross Section so as topresent a sharp surface ERNST BoLEY'.

